consider the sequence -101, -91, -81, -71,
determine an explicit formula for the nth term of the sequence.

a n = 10 n − 111

Step-by-step explanation:

Use the formula  a n = a 1 +d ( n − 1 )  to identify the arithmetic sequence.

a n = 10 n − 111

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.