7-59. Markups A new 2016 Honda Accord has a list price | of $25,965. Suppose that the dealer mark-up on this car is 9.3%. What is the dealer’s cost?

${\displaystyle 4(\left(\frac{t}{8}\right)+5)}$

What does it mean: the product of two ideals I and J is the set of all finite sums of elements of the form ab with ${\displaystyle a\in I}$ and ${\displaystyle b\in J}$?

Janine worked 15 hours last week. One job as a clerk in a sporting goods store paid her $8.46 per​ hour, while her job giving piano lessons paid ​$18 per hour. If she earned $184.14 between the two​ jobs, how many hours did she work at each​ job?

What is the value of the digit in the hundredths place for 0.44?

Simplify, please.
${\displaystyle 8\left\{[4\left(p–4\right)+19]–[2\left(3p–2\right)+5]\right\}}$
If ${\displaystyle 8\left\{[4\left(p–4\right)+19]–[2\left(3p–2\right)+5]\right\}=-16p+16}$

Let $R=\{\left[\begin{array}{cc}a& b\\ 0& a\end{array}\right];a,b\in Q\}$. One can prove that R with the usual matrix addition and multiplication is a ring. Consider $J=\{\left[\begin{array}{cc}0& b\\ 0& 0\end{array}\right];b\in Q\}$ be a subset of the ring R.
(a) Prove that the subset J is an ideal of the ring R; (b) Prove that the quotient ring ${\displaystyle \frac{R}{J}}$ is isomorphic to Q.

Two minor league baseball players got a total of 366 hits. Washington had 12 more hits than Sanchez. Find the number of hits for each player. Washington had 195 hits. Sanchez had 171 hits.