10 points and i will give brainliest

what is the equation of the

8. circle with radius 4, and center (0,0)?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

9/10 divide by -3/15 as a mixed number

What are the domain and range of the function f(x)=2^x+1