Answer:
1. 62
2. 35
Step-by-step explanation:
1. Just substitute for x and y:
[tex]3(5)(2) + 4(2)^3[/tex]
[tex]30+4(8)[/tex]
[tex]30+32[/tex]
[tex]62[/tex]
2. Add 15 to both sides:
[tex]3c-15+15 = 90+15[/tex]
[tex]3c=105[/tex]
Then divide by 3:
[tex]\frac{3c}{3} =\frac{105}{3}[/tex]
[tex]c=\frac{105}{3} =35[/tex]
