Answer:
D
Step-by-step explanation:
money given by parents = $300
earning per hour = $8.5
0.2 × 8.5 = $1.7
y = saving for college
x = hours he worked
y = saving from wages + given by parents
y = 1.7x + 300
4*130%=5.2
7*130%=9.1
5.2*2+9.1*2=28.6 in
or You can just do
(4+7)*130%*2=28.6 in
Answer:
1
Step-by-step explanation:
For T=0 to T=10, D = T*3*6
<span>for T>10 to T=20, D = 30*6 + (T-30)*3*5.5 </span>