a. What unknown amount in the car wash problem could you represent with a variable? b. The phrase more than in this problem tells you to use the operation of . c. The word twice in this problem tells you to use the operation of by 2. d. Let x represent the amount of money raised last year. Write an algebraic expression to represent the amount of money raised this year.

1/2*qr*rs

step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation: