Aclothing store bought a shirt from
a manufacturer for $85 and marked
up its price by 10%. a month later,
the store reduced the shirt's price by
10%. what was the shirt's price after
that heduction:
a $83.30
b $84.15
c $85.00
d $85.85

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6