Find the equation of the tangent line to the curve y=x sqrtx at point (4,8)

Y=?

How do i do this using elimination 2x+3y=12 x-y=6

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1