Solve for the following system of equations using substitution, what is the value of y? 2x 3y=105 x 2y=65
a.15
b.25
c.45
d.65

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22

Over the course of a month, a person's weight decreases. what type of relationship is this? a. positive relationship

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read