Answer:
=2(2x+9)
Explanation:
Always look for a common factor first. 2 in this case.
Divide 2 out of each term
4x+18
=2(2x+9)
28/4 = 7. 7 x 3 = 21, so 28 - 21 = 7. 7 cards left. 28 - 3c = 7.
Answer:
298
Step-by-step explanation:
15(10) + 12(7) + 8(7)
X = number of lessons, y = total cost
y = 15x + 20 <== ur equation
when total bill was 125...y = 125
125 = 15x + 20
125 - 20 = 15x
105 = 15x
105/15 = x
7 = x <=== if Bill took 7 lessons, it would cost 125 <==