Which statement about the system of equations is true?

a.) the system has no solutions.

b.) the system has many solutions.

c.) the system has exactly 1 solutions.

d.) the system has exactly 2 solutions.

Whoever gets this right gets the ! the half life of a soul smelling substance is 4 years. if you have 8 oz of this strange substance, how much of it will you have after 20 years? show work.

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?

Will mark brainliest, , and rate to only chrislaurencelleenzo is making a scale drawing of the rectangle below. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~imageenzo says that he can draw an enlarged rectangle that is 16 centimeters by 13 centimeters. which explains whether enzo is correct? enzo is correct because he used a factor of 2 to enlarge the rectangle.enzo is correct because he doubled one dimension and added the two lengths to get the other dimension.enzo is not correct because the enlarged rectangle should be 16 centimeters by 5 centimeters.enzo is not correct because he did not multiply the length and width by the same factor.