Simplify to create a equivalent expression.
5(10k+1)+2(2+8k)
a.)66k+9
b.)64k+9
c.)66k+54
d.)64k-9

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth

From a group of 10 men and 8 women, 5 people are to be selected for a committee so that at least 4 men are on the committee. howmany ways can it be done?