Sum of polynomials?
(m+n+3) + (m+n+4)

a.-1
b. m2+n2+7
c.2m+2n+7
d.2m2+2n2+7

The answer is c because there are 2 m's, 2 n's, and 3+4 is 7

One shot. if 60% of 10 is 6, then what is 70%? we know it would be seven (since 60% is mathematically 60/100, or 6/10, then 70% is 70/100, or 7/10) but we can check anyway using ratios: 6 : 60% = x : 70%*inverse multiplicationx * 60% = 6 * 70%*divide both sides by 60%x = (6 * 70%) / 60%x = 7and since he has made 6 shots already, he would need just one more to get 7 shots or 70%. if the explanation is too confusing, comment and i will try to