Y = 0.05x + 3.15 with y being the total cost and x being the number of minutes
so if u were charged 5.10.....sub in 5.10 for y
5.10 = 0.05x + 3.15
5.10 - 3.15 = 0.05x
1.95 = 0.05x
1.95 / 0.05 = x
39 = x <=== so u talked for 39 minutes
1: Noah can finish the triangle by joining the two points together.
2: (I'm not sure about that one sorry)
Hope it helps!! :)
4% of $57.84
= 2.31 est. is sales tax
Step-by-step explanation:
2 3/4 = 11/4 (there are 4/4 in 1, so 2 have 8/4, and then plus 3/4 = 11/4).
1 4/7 = 11/7 (7/7 in 1 plus 4/7 = 11/7)
so, we actuality have
11/4 ÷ 11/7 = 11/4 × 7/11 = (7×11)/(4×11) = 7/4 = 1 3/4