Direct Variation Answers

There are about 100 calories in 30 grams of Swiss cheese. Ruth ate 70 grams of this cheese. About how many calories were in the cheese that she ate if the number of calories varies directly as the weight of the cheese?a.224c.218b.280d.233

If 3 sandwich rolls cost $0.51, how much will 20 rolls cost?a.$1.53b.$3.40c.$3.53d.$4.4

If y varies directly as and y = 72 when x =3, what is the value of y when x = 6? a. 18 b. 24 c. 288 d. 144 Please select the best answer from the choices provided

The variables x and y vary directly. Given the equation y = 2x , find the value of x wheny = 10.a.10c.20b.5d.8

If y varies directly as and y = 20 when x = 6, what is the value of y when x = 24? a. 36 b. 80 c. 30 d. 4 Please select the best answer from the choices provided

Suppose y varies directly as x. If y = 7 when x = 28, what is the value of x when y = 3?a.7b.9c.12d.16

The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 9-kg object stretches a spring 54 cm, find the distance when the weight is 2-kg. Round your answer to the nearest whole centimeter.a.65 cmb.12 cmc.0 cmd.6 cm

If y varies directly as the and y = 448 when x = 8, what is the value of y when x = 9? a. 567 b. 72 c. 504 d. 56 Please select the best answer from the choices provided

The distance an object falls when dropped from a tower varies directly as the square of the time it falls. If the object falls 144 feet in 3 seconds, how far will it fall in 18 seconds?a.4536 ftb.5832 ftc.5184 ftd.288 ft

If 2.2 pounds of a certain grain cost $1.54, how much will 5.7 pounds of the grain cost?a.$4.38b.$4.79c.$3.62d.$3.99