Answer: 5 hours
Step-by-step explanation: c=35•h+25
25=40•h-35•h; 25=5•h
Answer:
84
Step-by-step explanation:
30% * $280

= 84
So, the sale price is $84
9514 1404 393
Answer:
16x +8h
Step-by-step explanation:
Use the given function arguments and simplify.

Step-by-step explanation:
3a^2+24a+45=0
×3/3( first ×3)
9a^2+24(3a)+135=0
(3a+15)(3a+9)=0
now /3
3(a+5)(a+3)
a=-5✓
a=-3✓