I will brainlist who can answer this 2 question! Determine whether each linear system has one solution, no solution, or an infinite number of solutions.

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Write the equations in logarithmic form 7^3=343