If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to X form the first equation is substituted into the second equation. -x+5y=1
2x+4y=-4

a. 2(5y-1)+4y=-4
b. 2(-5y+1)+4y=-4
c. 2x+4(-5y+1)=-4
d. 2x+4(5y-1)=-4

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7