5. Ray wants to buy a hat that costs $10 and some shirts that cost $12 each.
The sales tax rate is 6.5%. The expression 0.065(10 + 12s) can be used
to determine the amount of sales tax that Ray will pay on his entire
purchase. Expand the expression. Lesson 4-4

0.65 + 0.78s

Step-by-step explanation:

to expand the expression, we want to multiply each term inside of the parentheses by the expression outside the parentheses

a(b+c) = ab + ac

0.065(10 + 12s)

= 0.065*10 + 0.065 * 12s

= 0.65 + 0.78s

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed