Solve the system of equations for 3x-0.6y=-0.9 and -0.5x+0.12y=0.16

Point r divides in the ratio 1 : 3. if the x-coordinate of r is -1 and the x-coordinate of p is -3, what is the x-coordinate of q? a. b. 3 c. 5 d. 6 e. -9

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Calculate the average rate of change over the interval [1, 3] for the following function. f(x)=4(5)^x a. -260 b. 260 c. 240 d. -240