A store offers a discount of $2.25 on each sweater that originally cost $19.55. What is the total cost of 3 sweaters with the discount?

$51.90

Step-by-step explanation:

We need to work out the cost of the 3 sweaters, so each sweater's original cost needs to be subtracted by $2.25.

$19.55 x 3 = $58.65  Here, we work out the total cost of the 3 sweaters without the discount.

$2.25 x 3 = $6.75  This is the discount amount for the 3 sweaters in total.

$58.65 - $6.75 = $51.90 We subtract the total original cost by the discount amount to get the answer.

y -5 = (-1/4)(x + 8)

step-by-step explanation:

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!