Consider the system of linear equations. 5x+10y=15 10x+3y=13 to use the linear combination method and addition to eliminate the x-terms, by which number should the first equation be multiplied?
a- -2
b- -1/2
c- 1/2
d- 2

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

How many grams the dog will eat in 3 days?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)