Evaluate the expression 23^0-15^1+18^0+(43-12)

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9