Hello, I need some help. Let me know if you can’t see the picture. Don't know why it took like that.

Which is the standard form for this number? (4 x 1 100 ) + (8 x 1 1,000 ) + ( 3 x 1 100,000 ) ? a) 0.004803 b) 0.04803 c) 0.0483 d) 0.483

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315