Chris thinks of a number, he multiplies that number by 4 and then adds 6. Jodie thinks of the same number as Chris, she subtracts 3 and then multiplies by 10. They both end up with the same answer. What number did they think of?

its kind of blurry. can you put a clearer pic?

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

answer: the resulting cross section is a rectangle. solution: a plane parallel to the base of a triangular prism will intersect a cross section that is the same shape as its bases. so the cross section is a triangle.

step-by-step explanation: