1) If a and b are positive integers such that a×a = b×b+ 15, what is the greatest possible value of a?
2) Alex expresses a number in the form 4x + 5. Brian expresses the same number as 6x − 7. If Jack wants to express this number in the form 5x - d, what would be the value of d ?
3) If all the diagonals of a decagon are drawn at how many points they will intersect ?

Lassify the function as linear or quadratic and identify the quadratic, linear, and constant terms. f(x) = (3x + 2)(−6x − 3) linear function; linear term: −21x; constant term: −6 linear function; linear term: −18x2; constant term: −6 quadratic function; quadratic term: 6x2; linear term: 24x; constant term: −6 quadratic function; quadratic term: −18x2; linear term: −21x; constant term: −6

Question 9 of 10 2 points suppose your sat score is 1770. you look up the average sat scores for students admitted to your preferred colleges and find the list of scores below. based on your sat score of 1770, which average score below represents the college that would be your best option? o a. 1790 o b. 2130 o c. 2210 od. 1350

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6