Which description best describes the solution to the following system of equations? (20 points)

y = −one halfx + 9
y = x + 7

select one:
a. lines y = −one halfx + 9 and y = x + 7 intersect the x-axis.
b. lines y = −one halfx + 9 and y = x + 7 intersect the y-axis.
c. line y = −one halfx + 9 intersects the origin.
d. line y = −one halfx + 9 intersects line y = x + 7.

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true