The area of an umbrella varies directly as the square of it's radius. If the radius of the umbrella is divided, How much will be the area of the umbrella

Which linear function represents the line given by the point-slope equation y + 1 = –3(x – 5)?

At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?

Rectangle abcd is similar to rectangle rstu . what is the scale factor of a dilation from abcd to rstu ? enter your answer in the box.