Prove that the graphs of the equations 3x–y=–5 and –x+10y=21 and 11x+21y=31 intersect at the point P (–1, 2).

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Use the ratio test to determine whether ∑n=14∞n+2n! converges or diverges. (a) find the ratio of successive terms. write your answer as a fully simplified fraction. for n≥14, limn→∞∣∣∣an+1an∣∣∣=limn→∞.