Which placement of grouping symbols in the expression gives it a value of 22?

3 • 4 – 2 + 5 +7

a.
3 • [4 – (2 + 5) + 7]

b.
(3 • 4) – [2 + (5 + 7)]

c.
[(3 • 4) – 2] + (5 + 7)

d.
3 • (4 – 2) + (5 + 7)

Write the following as a base and exponent

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)

Mr. jones determined that the equation y = 98 - 16/5 x could be used to predict his students' unit test scores, based on the number of days, x, a student was absent during the unit. what was the meaning of the y-intercept of the function? (by the way the 16/5 is a )