The ratio of magazines to books in the library at Grady’s school is 2 to 9. which of these is an equivalent ratio? A. 4 to 9
B. 10 to 45
C. 2 to 18
D. 1 to 18

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Solve each quadratic equation by factoring and using the zero product property. 10x + 6 = -2x^2 -2

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n