An astronaut weighs 170 pounds on earth but only 68 pounds on mars. while visiting the planet, the astronaut removes a rock sample that weighs 25 pounds on mars.
what is the weight of the rock sample on earth?
me solve.
a. 0.22
b. 4
c. 0.5
d. not enough info.

Convert the cartesian equation (x 2 + y 2)2 = 4(x 2 - y 2) to a polar equation. choices: r4 = -4r2 r2 = 4cos2θ r2 = 4sin2θ

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.