What is the sum of the first 21 terms of the arithmetic series?
−5+(−3)+(−1)+1+
i need !
gave 50 pts!

Can someone me do math because i am having a breakdown rn because i don’t get it

Determine the following data for the quadratic relation f(x) = -3(x+2)(x-3)? i. direction of opening: ii. x-intercepts: iii. y-intecept: iv. axis of symmetry: v. vertex:

Ahealth-food producer has 250 samples of a new snack to distribute in the mall. the producer has to keep at least 50 samples for display in the health food for the product launch. how long will the samples last if consumers are taking the samples at a rate of 25 every hour