Find the x-and y-intercepts of the rational function f(x)=\frac{6}{x^{2}+4x-7}

The winner of a 250 mile race drove his car to victory at a rate of 137.1656 mph. What was his time (to the nearest thousandth of an hour)?

See above. I am trying to re-teach myself mathematics in a different manner than is formally taught (i.e., set theory, number theory, mathematical logic, abstract algebra, discrete math and then precalculus (college algebra and analytical geometry). These are the pillars to upper level mathematics correct?

Self-Check A student scores 82,96,91, and 92 on four college algebra exams.What score is needed on a fifth exam for the student to earn an average grade of 90?

Table shows the number of wireless service subscribers in the United States and their average monthly bill in the years from 2000 through 2015

. $\begin{array}{ccc}\text{Year}& \text{Subscribers}& \text{Average Monthly}\\ & \text{(millions)}& \text{Revenue per Subscriber Unit }\\ \text{2000}& \text{109.5}& \text{48.55}\\ \text{2001}& \text{128.4}& \text{49.79}\\ \text{2002}& \text{140.8}& \text{51.00}\\ \text{2003}& \text{158.7}& \text{51.55}\\ \text{2004}& \text{182.1}& \text{52.54}\\ \text{2005}& \text{207.9}& \text{50.65}\\ \text{2006}& \text{233.0}& \text{49.07}\\ \text{2007}& \text{255.4}& \text{49.26}\\ \text{2008}& \text{270.3}& \text{48.87}\\ \text{2009}& \text{285.6}& \text{47.97}\\ \text{2010}& \text{296.3}& \text{47.53}\\ \text{2011}& \text{316.0}& \text{46.11}\\ \text{2012}& \text{326.5}& \text{48.99}\\ \text{2013}& \text{335.7}& \text{48.79}\\ \text{2014}& \text{355.4}& \text{46.64}\\ \text{2015}& \text{377.9}& \text{44.65}\end{array}$

One of the scatter plots suggests a linear model. Use the points at t = 0 and t = 15 to find a model in the form y = mx + b.

g(x)
${\displaystyle =\frac{2x^2-3x-20}{x-4},\text{if}x\ne 4}$
and
=kx-15, if x=4
Evaluate the constant k that makes the function continuous.

Starting from the point ${\displaystyle (3,-2,-1)}$, reparametrize the curve ${\displaystyle x\left(t\right)=(3-3t,-2-t,-1-t)}$ in terms of arclength.

For the following exercises, determine whether the equation represents exponential growth, exponential decay, or neither. Explain. $y=16.5(1.025{)}^{1/2}$