Answer:
a. 5
Step-by-step explanation:
that is an acute angle which is less than 90*, the only answer choice to give u and acute angle is 5
It is not linear, as the 1st hour charged $25, and the 2nd hour charged $40, while the third hour charged $60, that's a $15 difference then a $20
The first step would be to subtract 1 from both sides, leaving you with 5x = 10.