Mari and rob are making a poster for the science fair . they need to fiqure out how much a rock that weighs 7 pounds on earth would weigh on mars . they know that they can multiply the amount that rock weighs on earth by 0.38 to find it's weight on mars. circle the partial products mary and rob would need to add to find the product of 7 and 0.38. mark all that apply .a)0.7 b)0.56 c)2.66 d)2.1 e)0.38