Look on this website they have all the answer getmathhelp.net
Answer:
3/5 y +9/10 z
Step-by-step explanation:
4/5 y + 7/10 z - 1/5 y + 1/5 z
4/5 y - 1/5 y + 7/10 z + 1/5 z
We need to get a common denominator for the z term of 10
4/5 y - 1/5 y + 7/10 z + 1/5 *2/2 z
4/5 y - 1/5 y + 7/10 z + 2/10 z
3/5 y +9/10 z
The amount of sales for kevins purchase is $57.51
The answer is B. If you substitute the values of x, y and z in you get 1 * -10 which just is -10. -10 / 2 = -5.
