Mary and her brother John collect foreign coins. Mary has three times the number of coins that John has. Together they have 180 foreign coins. Find how many coins Mary has.

45 coins

126 coins

135 coins

17 coins

Adam's father spent 1 hour and 50 minutes working on his truck. If it was 7:35 when he stopped working, what time was it when he originally started?

The local food pantry has 1, 600 cans of fruit. They give away 155 cans of fruit each week. Assuming no new donations are made, how many cans of fruit will remain after 6 weeks? The solution is What is the answer for this problem?

If the value of Y is between 0.0078 and 0.01 which of the following could be Y? A. 0.08 B. 0.0099 C. 0.016 D. 0.1076

Two objects were lifted by a machine. One object had a mass of 2 kilograms and was lifted at a speed of 2m/sec. the other had a mass of 4 kilograms and was lifted at a rate of 3m/sec.

Which line is not perpendicular to the line 4x - 3y = 2? 3x + 4y = 2 3x - 4y = 2 -3x - 4y = 5 3x + 4y = - 8

35% of what number is 84?

Paul wrote the equation t=2m+40 to represent the temperature, t, in degrees Celsius, after a substance had been heated for m minutes.

Sam had 1 1/2 m of rope. he cut 5/8 m used it for a project. how much rope does sam have left

Seven times the sum of a number and 3 is equal to 6

How much money invested at 5% compounded continuously for 3 years will result in $820 Can someone explain how to do this?