10. (10 points) using only dimes and quarters, how many ways can you pay exactly a $7 bill? (for example, one way would be to use 10 dimes and 24 quarters. you may assume you have sufficient amount of each type of coin.)

Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Identify the number as a rational or irrational.explain. 127