Answer:
$5.25
Step-by-step explanation:
If the friend tripled the first purchase and subtracted twice the second purchase, he would have the cost of 3·8-2·5 = 14 notebooks. 7 notebooks would cost half that amount:
(3·$11 -2·11.25)/2 = $5.25 . . . . . cost of 7 notebooks
Answer:
b
Step-by-step explanation:
took the test
Answer:
Step-by-step explanation:
I am joyous to assist you at any time.
Answer:
14
Step-by-step explanation:
21-3^2+2
3 to the second power is 9
then, 21 - 9 + 2
left to right.....
21 - 9 = 12
12+2=14
